Please wait a minute...
中国腐蚀与防护学报  2005, Vol. 25 Issue (3): 183-186     
  失效分析 本期目录 | 过刊浏览 |
埋地铸铁海水管失效分析
张慧敏;潘家祯;王志文
华东理工大学;上海应用技术学院
AN ANALYSIS OF FAILURE IN CAST IRON SEAWATER BURIED PIPE
;;
华东理工大学;上海应用技术学院
全文: PDF(246 KB)  
摘要: 通过宏观形貌观察、金相分析、能谱分析、微观裂纹及其断口分析,得到输送海水的铸铁管失效的原因为Cl\+-离子及氧存在下的电化学腐蚀,并对腐蚀机理进行了阐述.
关键词 海水铸铁管腐蚀机理失效原因    
Abstract:This paper mainly analyses the cause and principle of the failure in cast iron seawater pipe.The pipe is 630 mm of inside diameter and 12 mm of wall thickness.In the inner wall coating was polymer sand plasma.There was a big corroded hole in the pipe.With the help of morphological character and metallographic examination,it was found that on the matrix material there were small holes with different depth and size and only few pearlite matrix was left.With the help of microanalysis,it was found that in the inner wall there were Cl\+- and oxygen.With the help of scanning electron microscope,it was found that in the crack area there was oxide in the shape of line.In the same time it was found the value of rigidity was lower in inner face than in outer face.Through the analysis we can confirm the cause of the failure is the action of electrochemical corrosion and chemical corrosion when the Cl\+- and oxygen were existed.The equation of the electrochemical corrosion is also discussed.
Key wordsseawater    cast iron pipe    corrosion principle    failure analysis
收稿日期: 2004-01-12     
ZTFLH:  TG172.5  
通讯作者: 张慧敏     E-mail: zhanghuimin2@hotmail.com

引用本文:

张慧敏; 潘家祯; 王志文 . 埋地铸铁海水管失效分析[J]. 中国腐蚀与防护学报, 2005, 25(3): 183-186 .

链接本文:

https://www.jcscp.org/CN/Y2005/V25/I3/183

[1]MakarJM.Apreliminaryanalysesoffailuresofgraycastironwater pipe[J].EngineeringFailureAnalysis,2000,7:43-53
[2]NevilleA,HodgkiessT,XuH.Anelectrochemicalandmicrostruc turalassessmentoferosion-corrosionofcastiron[J].Wear,1999,(233-235):523-534
[3]WangRF,WeiH,XiaLT.There-corrosionofcastironinthe environmentofsea[J].ResearchStudiesonFoundryEquipment,2001,(05):25-27(王荣峰,韦华,夏兰廷.铸铁在海洋腐蚀环境下的防护措施[J].铸造设备研究,2001,(05):25-27)
[4]XiaLT,WeiH.Effectofgraphitemorphologyonthecorrosion propertiesofcastironinthestillsea[J].J.TaiyuanHeavyMachin eryInstitute,2002,23(1):532-534,547(夏兰廷,韦华.石墨形态对铸铁静海腐蚀性能的影响[J].太原重型机械学院学报,2002,23(1):532-534,547)
[1] 董续成, 管方, 徐利婷, 段继周, 侯保荣. 海洋环境硫酸盐还原菌对金属材料腐蚀机理的研究进展[J]. 中国腐蚀与防护学报, 2021, 41(1): 1-12.
[2] 岳亮亮, 马保吉. 超声表面滚压对AZ31B镁合金腐蚀行为的影响[J]. 中国腐蚀与防护学报, 2020, 40(6): 560-568.
[3] 翟思昕, 杨幸运, 杨继兰, 顾剑锋. 淬火-配分-回火钢在模拟海水环境中的腐蚀性能研究[J]. 中国腐蚀与防护学报, 2020, 40(5): 398-408.
[4] 王玉, 吴佳佳, 张盾. 海水环境中异化铁还原菌所致金属材料腐蚀的研究进展[J]. 中国腐蚀与防护学报, 2020, 40(5): 389-397.
[5] 朱丽霞, 贾海东, 罗金恒, 李丽锋, 金剑, 武刚, 胥聪敏. 外加电位对X80管线钢在轮南土壤模拟溶液中应力腐蚀行为的影响[J]. 中国腐蚀与防护学报, 2020, 40(4): 325-331.
[6] 梁毅, 杜艳霞. 交流干扰和阴极保护协同作用下的腐蚀评判标准与机理研究进展[J]. 中国腐蚀与防护学报, 2020, 40(3): 215-222.
[7] 丁国清,李向阳,张波,杨朝晖,黄桂桥,杨海洋,刘凯吉. 金属材料在天然海水中的腐蚀电位及其变化规律[J]. 中国腐蚀与防护学报, 2019, 39(6): 543-549.
[8] 严少坤,郑大江,韦江,宋光铃,周廉. 钝性纯Ti在人工海水中的电化学活化行为研究[J]. 中国腐蚀与防护学报, 2019, 39(2): 123-129.
[9] 达波,余红发,麻海燕,吴彰钰. 阻锈剂的掺入方式对全珊瑚海水混凝土中钢筋锈蚀的影响[J]. 中国腐蚀与防护学报, 2019, 39(2): 152-159.
[10] 杨丹,李定林,黄彦良,华丕龙,赵霞,彭鹏,王秀通. 海水抽水蓄能电站的金属腐蚀和选材问题研究现状[J]. 中国腐蚀与防护学报, 2019, 39(1): 1-8.
[11] 邓培昌, 刘泉兵, 李子运, 王贵, 胡杰珍, 王勰. X70管线钢在热带海水-海泥跃变区的腐蚀行为研究[J]. 中国腐蚀与防护学报, 2018, 38(5): 415-423.
[12] 王希靖, 王博士, 杨超, 杨艳, 沈斌. 纯Ni母材及焊缝在熔融Na2SO4-K2SO4中热腐蚀研究[J]. 中国腐蚀与防护学报, 2018, 38(5): 495-501.
[13] 王振华, 白杨, 马晓, 邢少华. 钛合金和铜合金管路电偶腐蚀数值仿真[J]. 中国腐蚀与防护学报, 2018, 38(4): 403-408.
[14] 夏大海, 宋诗哲, 王吉会, 高志明, 胡文彬. 食品包装用镀锡薄钢板的腐蚀机理研究进展[J]. 中国腐蚀与防护学报, 2017, 37(6): 513-518.
[15] 赵洪涛, 陆卫中, 李京, 郑玉贵. 无溶剂环氧防腐涂层在不同流速模拟海水冲刷条件下的失效行为[J]. 中国腐蚀与防护学报, 2017, 37(4): 329-340.